Upon establishment of germs as the cause of infectious diseases, scientists advocated the destruction of these microbes by exploiting the difference in nature of these germs and the host. This may be achieved by having agents acting only on the germs and not the host or what is known as "selective toxicity". The latter term was coined by
A. Louis Pasteur
B. Robert Koch
C. Joseph Lister
D. Paul Ehrlich
E. Alexander Fleming
Answer: D. Paul Ehrlich
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Based on the phylogeny shown, which species is not a tree but has seeds?
A. Psaronius
B. ginkgo
C. fern
D. rose
E. oak
F. pine
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities · What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Cancer does not typically follow a Mendelian pattern of inheritance because it is usually caused by
A) two gene variants, one dominant and one recessive, and no environmental input. B) specific combinations of alleles and an environmental factor. C) specific combinations of an environmental factor and one dominant gene variant. D) genes that cause death before birth.
Light suppresses secretion of __________ by the pineal gland in the brain. Fill in the blank(s) with the appropriate word(s)
The average annual temperature among geographic regions is plotted on the x-axis of a graph and the spiciness of local food in that region is plotted on the y-axis
If the hotness of local food increases as the average annual temperature increases, then what can be concluded? A) The spiciness of local food does not correlate with the regional average annual temperature. B) Food is spicy in warm climates because the warm temperatures make local foods more spicy. C) The relationship between the two variables shows causation but is not correlation. D) Spiciness of food and annual average temperature are correlated, but causation is not implied.